Method and apparatus for demultiplexing optical signals in a passive optical network
    1.
    发明授权
    Method and apparatus for demultiplexing optical signals in a passive optical network 失效
    用于在无源光网络中解复用光信号的方法和装置

    公开(公告)号:US08023782B2

    公开(公告)日:2011-09-20

    申请号:US12403967

    申请日:2009-03-13

    CPC classification number: G02B6/4246 G02B6/2931 G02B6/2938

    Abstract: Methods and structures are disclosed demultiplexing optical signals transmitted over an optical fiber into a silicon substrate and to multiple detectors. The silicon substrate has two spaced-apart surfaces and a diffractive element disposed adjacent to one of the surfaces. Each of the optical signals corresponds to one of multiple wavelengths. The optical signals are directed into the silicon substrate along a path through the first surface to be incident on the diffractive element. The path is oriented generally normal with the first surface and/or with the diffractive element, which angularly separates the optical signals such that each of the wavelengths traverses through the substrate in a wavelength dependent direction to the first surface. Each optical signal is steered from the first surface towards the second surface to be incident on different optical elements that direct them generally normal to the first surface to be incident on one of the detectors.

    Abstract translation: 公开了将光纤传输到硅衬底和多个检测器中的方法和结构。 硅衬底具有两个间隔开的表面和与其中一个表面相邻设置的衍射元件。 每个光信号对应于多个波长中的一个。 沿着穿过第一表面的路径将光信号引导到硅衬底中以入射到衍射元件上。 该路径与第一表面和/或衍射元件大致正交地定向,该衍射元件使光信号成角度地分离,使得每个波长沿着与第一表面波长相关的方向穿过衬底。 每个光信号从第一表面转向第二表面以入射到不同的光学元件上,这些光学元件将它们大致垂直于第一表面入射到其中一个检测器上。

    Nuclear reactor system and method for operating the same

    公开(公告)号:US5402456A

    公开(公告)日:1995-03-28

    申请号:US41759

    申请日:1993-04-02

    CPC classification number: G21C9/016 Y02E30/40

    Abstract: A nuclear reactor system having a water-cooled reactor includes a reactor containment. A shielding pit inside the reactor containment has a lower region with an outlet opening formed therein. A reactor pressure vessel is disposed in the shielding pit. A moderating cell is disposed downstream of the outlet opening and has a device for slowing down and diverting a melt flowing through the outlet opening. A catch basin is disposed downstream of the moderating cell for receiving a melt and a supply of water. A method for operating a nuclear reactor system includes covering the bottom of the catch basin with water during normal operation of the reactor, and maintaining the water in the catch basin at a surface level being lower than the lowermost region of the bottom of the shielding pit.

    METHOD AND APPARATUS FOR DEMULTIPLEXING OPTICAL SIGNALS IN A PASSIVE OPTICAL NETWORK
    5.
    发明申请
    METHOD AND APPARATUS FOR DEMULTIPLEXING OPTICAL SIGNALS IN A PASSIVE OPTICAL NETWORK 失效
    用于在被动光网络中解复用光信号的方法和装置

    公开(公告)号:US20080013952A1

    公开(公告)日:2008-01-17

    申请号:US11771760

    申请日:2007-06-29

    CPC classification number: G02B6/4246 G02B6/2931 G02B6/2938

    Abstract: Methods and structures are disclosed demultiplexing optical signals transmitted over an optical fiber into a silicon substrate and to multiple detectors. The silicon substrate has two spaced-apart surfaces and a diffractive element disposed adjacent to one of the surfaces. Each of the optical signals corresponds to one of multiple wavelengths. The optical signals are directed into the silicon substrate along a path through the first surface to be incident on the diffractive element. The path is oriented generally normal with the first surface and/or with the diffractive element, which angularly separates the optical signals such that each of the wavelengths traverses through the substrate in a wavelength dependent direction to the first surface. Each optical signal is steered from the first surface towards the second surface to be incident on different optical elements that direct them generally normal to the first surface to be incident on one of the detectors.

    Abstract translation: 公开了将光纤传输到硅衬底和多个检测器中的方法和结构。 硅衬底具有两个间隔开的表面和与其中一个表面相邻设置的衍射元件。 每个光信号对应于多个波长中的一个。 沿着穿过第一表面的路径将光信号引导到硅衬底中以入射到衍射元件上。 该路径与第一表面和/或衍射元件大致正交地定向,该衍射元件使光信号成角度地分离,使得每个波长沿着与第一表面波长相关的方向穿过衬底。 每个光信号从第一表面转向第二表面以入射到不同的光学元件上,这些光学元件将它们大致垂直于第一表面入射到其中一个检测器上。

    Field effect transistor source or drain with a multi-facet surface
    7.
    发明授权
    Field effect transistor source or drain with a multi-facet surface 有权
    具有多面表面的场效应晶体管源极或漏极

    公开(公告)号:US08212336B2

    公开(公告)日:2012-07-03

    申请号:US12549227

    申请日:2009-08-27

    CPC classification number: H01L29/045 H01L29/785 H01L29/78606 H01L29/78648

    Abstract: FET configurations in which two (or more) facets are exposed on a surface of a semiconductor channel, the facets being angled with respect to the direction of the channel, allow for conformal deposition of a convex or concave S/D. A convex tip of the S/D enhances electric fields at the interface, reducing the resistance between the S/D and the channel. In contrast, a S/D having a concave tip yields a dual-gate FET that emphasizes reduced short-channel effects rather than electric field enhancement. The use of self-limiting, selective wet etches to expose the facets facilitates process control, control of interface chemistry, and manufacturability.

    Abstract translation: 其中两个(或多个)刻面暴露在半导体沟道的表面上的FET配置,小面相对于沟道的方向成角度,允许凸或凹S / D的共形沉积。 S / D的凸尖增强了界面处的电场,减小了S / D和通道之间的电阻。 相比之下,具有凹入尖端的S / D产生了强调减少的短沟道效应而不是电场增强的双栅极FET。 使用自限制的选择性湿蚀刻来暴露刻面有助于过程控制,界面化学的控制和可制造性。

    Ridge technique for fabricating an optical detector and an optical waveguide
    9.
    发明授权
    Ridge technique for fabricating an optical detector and an optical waveguide 失效
    用于制造光学检测器和光波导的脊技术

    公开(公告)号:US07760980B2

    公开(公告)日:2010-07-20

    申请号:US11514291

    申请日:2006-08-31

    Abstract: A method of fabricating on a substrate an optical detector in an optical waveguide, the method involving: forming at least one layer on a surface of the substrate, said at least one layer comprising SiGe; implanting an impurity into the at least one layer over a first area to form a detector region for the optical detector; etching into the at least one layer in a first region and a second region to form a ridge between the first and second regions, said ridge defining the optical detector and the optical waveguide; filling the first and second regions with a dielectric material having a lower refractive index than SiGe; and after filling the first and second regions with the dielectric material, removing surface material to form a planarized upper surface.

    Abstract translation: 一种在光波导中在基板上制造光检测器的方法,所述方法包括:在所述基板的表面上形成至少一层,所述至少一层包括SiGe; 在第一区域上将杂质注入到所述至少一个层中以形成用于所述光学检测器的检测器区域; 在第一区域和第二区域中蚀刻到所述至少一个层中以在所述第一和第二区域之间形成脊,所述脊限定所述光学检测器和所述光波导; 用具有比SiGe低的折射率的电介质材料填充第一和第二区域; 并且在用电介质材料填充第一和第二区域之后,去除表面材料以形成平坦化的上表面。

    Method and apparatus for demultiplexing optical signals in a passive optical network
    10.
    发明授权
    Method and apparatus for demultiplexing optical signals in a passive optical network 失效
    用于在无源光网络中解复用光信号的方法和装置

    公开(公告)号:US07505647B2

    公开(公告)日:2009-03-17

    申请号:US11771760

    申请日:2007-06-29

    CPC classification number: G02B6/4246 G02B6/2931 G02B6/2938

    Abstract: Methods and structures are disclosed demultiplexing optical signals transmitted over an optical fiber into a silicon substrate and to multiple detectors. The silicon substrate has two spaced-apart surfaces and a diffractive element disposed adjacent to one of the surfaces. Each of the optical signals corresponds to one of multiple wavelengths. The optical signals are directed into the silicon substrate along a path through the first surface to be incident on the diffractive element. The path is oriented generally normal with the first surface and/or with the diffractive element, which angularly separates the optical signals such that each of the wavelengths traverses through the substrate in a wavelength dependent direction to the first surface. Each optical signal is steered from the first surface towards the second surface to be incident on different optical elements that direct them generally normal to the first surface to be incident on one of the detectors.

    Abstract translation: 公开了将光纤传输到硅衬底和多个检测器中的方法和结构。 硅衬底具有两个间隔开的表面和与其中一个表面相邻设置的衍射元件。 每个光信号对应于多个波长中的一个。 沿着穿过第一表面的路径将光信号引导到硅衬底中以入射到衍射元件上。 该路径与第一表面和/或衍射元件大致正交,该衍射元件使光信号成角度地分离,使得每个波长以与波长相关的方向穿过基板。 每个光信号从第一表面转向第二表面以入射到不同的光学元件上,这些光学元件将它们大致垂直于第一表面入射到其中一个检测器上。

Patent Agency Ranking